I'm using Bootcamp on a Macbook air and a Macbook retina, both exhibiting same behaviour. I basically insert the USB flash drive, and go through the bootcamp steps, including selecting partition size and then restarting. Once it restarts it goes into Windows installation, but I cannot install on the Bootcamp partition. I of course go to advanced and try to format that partition, but it tells me there is an error and that I should check the install log. I am following the steps from here (standard installation with bootcamp): http://appducate.com/2013/03/how-to-install-run-windows-on-a-mac-with-bootcamp/ What could be the issue? I tried 2 different USB sticks, and two Macbooks, and having the same issues with all combinations.